STP, ECN and Market Maker Brokers Compared

Every forex order has to go somewhere once you click buy or sell. The execution model decides who takes the other side of that trade, and it shapes the spread and the cost you pay.

Three terms cover most of the market: market maker, STP and ECN. Each one routes your order in a different way.

What a Market Maker Does

A market maker runs its own internal book. When you open a trade, the broker often becomes the other side of it, rather than sending your order out to the wider market.

The broker sets its own bid and ask price and earns from the spread between them. Because the broker can profit when a client loses, this model carries a built in conflict of interest that does not exist in the other two.

That does not make every market maker unfair. Regulation and internal risk limits keep most of them honest. It just means the incentive sits in a different place than it does with a broker who never holds the other side of your trade.

How STP Routes Your Order

STP stands for straight through processing. An STP broker skips the internal book and sends your order straight to a pool of outside liquidity providers, such as banks and other brokers.

The broker picks the best price on offer from that pool at the moment you trade. Since the broker never takes the other side, there is no conflict between your result and its own. Spreads still vary, so the gap between providers matters when you compare a best forex broker against another.

How ECN Adds a Live Order Book

ECN stands for electronic communication network. It works like STP in that your order leaves the broker and reaches outside participants, but it goes further by showing a live order book.

You can see real bid and ask volumes from banks, funds and other traders, not just one quoted price. That structure is not unique to currency pairs. The same network model sits behind what is cfd trading on shares and indices, since those contracts price off the same kind of liquidity pool.

ECN brokers usually charge a separate commission per trade instead of folding their cost into the spread. Spreads can run close to zero when the market is busy, then widen when liquidity thins out.

Dealing Desk vs No Dealing Desk

Market makers are often called dealing desk brokers, since a dealer sits between you and the market. STP and ECN brokers fall under no dealing desk, because orders pass straight through to outside providers.

A no dealing desk broker earns from the spread markup, the commission, or both. It has no reason to trade against you, since it never holds your position on its own book.

Hybrid Brokers

Many brokers now run a hybrid setup instead of picking one pure model. Some orders route out to the market, and others get filled internally, depending on the size of the trade and the instrument.

A broker might send a large professional order straight to a liquidity provider, while a small retail order stays on the internal book. You often cannot tell which path your own order took, so the label on the account tells you less than it used to.

Spreads and Commission Compared

• Market maker: wider spread, usually no separate commission, broker may take the other side
• STP: variable spread, sometimes a small commission, broker passes the order on
• ECN: raw or near raw spread, a per trade commission, full order book visible

A lower spread with a commission can cost less overall than a wider spread with none. Add both figures together before you judge which account is cheaper.

What Happens During News Events

A fixed spread sounds simple, but it can break down exactly when you need it most. During a major news release, a market maker may requote your order, asking you to accept a new price or cancel the trade.

STP and ECN accounts do not requote in the same way, since the price comes straight from the market rather than from the broker’s own book. The spread can still widen sharply, but the order gets filled at whatever price is live rather than bounced back to you.

Which Model Fits You

A market maker account often suits smaller trades and simple order types, since spreads are fixed and easy to plan around. STP and ECN accounts suit traders who want their orders to reach the open market, especially during busy news events when a fixed spread can lag the real price.

Check the account terms before you open one. The label tells you a lot, but the actual spread, commission and execution speed on offer still need confirming with the provider.